Home / 2,190.34-3,022.21-1,306.43

Finding the Fourth Proportional to 2,190.34, 3,022.21 and 1,306.43

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Solution

The fourth proportional to 2,190.34, 3,022.21 and 1,306.43 is: 1,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.34 : 3,022.21 = 1,306.43 : x
  2. Step 2: Convert to fraction form
    2,190.34/3,022.21 = 1,306.43/x
  3. Step 3: Cross multiply
    2,190.34x = 3,022.21 × 1,306.43
  4. Step 4: Simplify right side
    2,190.34x = 3,948,305.81
  5. Step 5: Solve for x
    x = 3,948,305.81/2,190.34
  6. Step 6: Final answer
    x = 1,802.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.